PCA9570.pdf

The PCA9570 is a CMOS device providing 4 bits of General Purpose parallel Output expansion in low voltage processor and handheld battery powered mobile applications, operating at 1 MHz I2C-bus speeds with backward compatibility to Fast-mode and Standard-mode. It features low current consumption, small packaging options, and a low operating voltage range of 1.1 V to 3.6 V, with latched outputs offering symmetrical 4 mA current drive capability at 3.3 V. The device contains an internal Power-On Reset and a Software Reset feature, and is compliant with I2C-bus Fast and Standard modes, with readable device ID, low standby current, and ESD protection. It is suitable for applications such as smart phones, tablets, portable medical equipment, and portable instrumentation, with packages offered in TSSOP8, XQFN8, and operating temperature range of -40 °C to +85 °C.